Check and handle WRITE_EXTERNAL_STORAGE permission

[sivaraam]

Our app targets version API level 31. Since API level 30 and higher, the WRITE_EXTERNAL_STORAGE has no effect but we still mention the same in our Manifest. We have requestLegacyExternalStorage as true in our AndroidManifest. Even that is said to be ignored when we target API level 31 as per the docs.

We should check what handling is necessary for scoped storage and implement the same. After that, I believe we could safely remove the permission request for WRITE_EXTERNAL_STORAGE.

This could help to an extent:

• Android storage use cases and best practices  |  Android Developers
• Storage updates in Android 11  |  Android Developers

Let me know if I'm missing anything.

[nicolas-raoul]

If difficult, we could even remove the Save in-app shots feature. I think it is the only feature that writes to external storage, and it is not a vital feature of the app.